I have a similiar problem(big ass small quads) and have been looking to balance it out a little more. Seeing I haven’t solved the problem I can’t really help you directly but I have a few ideas.
I recently split my legs into a quad day and a hamstring day. This allows me to really focus on the muscle unlike a full lower body day when I’m so fucked all I can think about is not throwing up. You still need to do compounds as they are more of mass builders then isolation exercises and I wouldn’t recommend taking glute exercises out completly as they are still a major muscle group and an important one also.
Tonight I tried close stance lunges and they really hit my quads hard. Lunges have always hit my ass previously. I did them on my toes for a little added difficulty. You could possibly squat with your feet closer together. Your knees will come out further but apparently this isn’t as bad as many make it out to be(so CT claims).
Like Bonez said, I wouldn’t cut upper body out either. Maybe just a 2:1 lower:upper would help.
As for programs, HSS-100 might be helpful. You have to design the exercises yourself but with the template you could probably minimize the use of your glutes.
Also, it can sometimes help by stretching the hip flexors regularly to help loosen them. Apparently this is a common problem.